#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
char* my_strcpy(char *arr1,const char *arr2)
{

	char* ret = arr1;
	while (*arr2)
	{
		*arr1++=*arr2++;
	}
	*arr1 = '\0';
	return ret;
}
int main()
{
	char arr2[] = "asdf";
	char arr1[20];
	my_strcpy(arr1,arr2);
	printf("%s", arr1);
	return 0;
}